Question

30x-27y= 24, 15x+21y = 0,5

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Answer 1

Ответ:

$30x - 27y = 24 \\ 30x = 24 + 27y \\ x = \frac{24 + 27y}{30}$

$15x + 21y = 0.5 \\ 15x = 0.5 - 21y \\ x = \frac{0.5 - 21y}{15}$